Question

Calculate the available void present in bcc structure​

Answer 1

Answer:

The total number of octahedral voids will be n and the total number of tetrahedral voids will be 2n, where n is the number of atoms in the lattice. So, bcc has 2 atoms, then the number of octahedral voids will be 2 and the total number of tetrahedral voids will be = 2 x 2 = 4.

Answer 2

If number of molecules in a unit cell is N , then this unit cell will have N octahedral and 2N tetrahedral voids

face centered (fcc) / cubical closed packing (ccp) : N = 4

body centered cubic (bcc) : N = 2

simple cubic : N = 1